<style>
    .div-relative{position:relative;margin-left: 300px;margin-top: 30px;}
    .div-a{ position:absolute; left:30px; top:190px; width:200px; height:40px}
    .div-b{ position:absolute; left:200px; top:60px; width:400px; height:300px}
</style>

<div class="div-relative">
    <div class="div-a"><img src="#url('/static/comm/img/cimrFrame.png')" width="300px" height="70px"/></div>
    <div class="div-b"><img src="#url('/static/comm/img/kidney.png')" width="400px" height="300px"/></div>
</div>

<!--<div style="text-align:center;margin-top: 100px;">-->
    <!--<img src="#url('/static/comm/img/cimrFrame.png')" width="300px" height="70px"/>-->
    <!--<img src="#url('/static/comm/img/kidney.png')" width="400px" height="300px"/>-->
<!--</div>-->